Officials on the island of St. Martin, have begun vector control measures to reduce the population of the aedes aegypti mosquito, which is primarily responsible for the spread of the virus; regional netizens have been using Twitter to give updates:

Why do I think Chukungunya is coming to the US? The virus is carried by mosquitoes are are ubiquitous throughout the Americas. All the virus needs to get a foothold in the US is for an infected individual (say a tourist) to bring the virus back to the Americas while the virus is circulating in their bloodstream. Then an “American” mosquito can bite the infected person, pick up the virus, and the cycle starts anew.